Tillaberi Slaughterhouse Discharges And Their Impact On The Niger River: A Physicochemical And Microbiological Analysis

The main objective of this work was to study the solid and liquid waste discharges of the slaughterhouse of the city of Tillabéri, and their impacts on the Niger River. To do so, the identification and quantification of the solid waste of the slaughterhouse were carried out in the first step, then the physical, chemical, and microbiological characterization of the liquid discharges of the slaughterhouse and of the river water in the second step. The results obtained showed that the slaughterhouse in the urban commune of Tillabéri produced an average of 156.1 ± 41.1 kg of solid waste per day, divided into four groups: 133 kg of stercoral, 19.7 kg of seized organs, 1.9 kg of plastic and 1.4 kg of skin pieces. The average values obtained after physic-chemical and microbiological characterization of the liquid waste are as follows pH (7.08 ± 0.15), Temperature (28.6 ± 0.49), Electrical conductivity (985 ±184.1 µS/cm), COD (12860 ± 3831.8mg/l), BOD (5338 ± 1572.05mg/l), Suspended Solid (835 ± 258.7mg/l) Cl- (81.5 ± 1.3 mg/l), NO3- (0.66 ± 0.97mg/l). The BOD5/COD ratio is about 0.41. After microbiological characterization of these liquid discharges, (3.1.104 cfu) of E. coli, (3.104 cfu) of fecal coliforms, and (6.1.108 cfu) of total coliforms were found. The physicochemical and microbiological characterization of the river water showed that most of the physicochemical parameters comply with the WHO limits, except for BOD5 and COD, which have fairly high average values of (62.5 ± 47.06mg/l) and (200 ± 110.1mg/l) respectively. The E. coli found are of the order of 5.6.104 cfu, however, there are no fecal coliforms in these waters. All these values indicate that the river water is polluted. This pollution would come from the discharges of the slaughterhouse

Epidémies de Choléra en Afrique Sub-Saharienne: Revue documentaire de 2010 à 2016

Introduction: Cholera remains a major public health problem in many parts of the world and particularly in sub-Saharan African countries. The objective of this study is to review data on cholera epidemiology, risk, microbiological and disease control factors in sub-Saharan Africa from 2010 to 2016. Material and method: A literature review on cholera epidemics in sub-Saharan Africa from 2010 to 2016 was conducted using electronic databases from countries that have experienced epidemics. Annual cholera data for countries with outbreaks from 2010 to 2016 have been reported. Results: From 2010 through 2016, 35 of the 54 African countries have experienced cholera epidemics. An overall of 1268 outbreaks have been reported, of which 13.04% were recorded in Nigeria and 4.35% in Burundi. The number of cases reported was 801022 and 13232 deaths (overall CFR =1.65%). Vibrio cholerae O1 and O139 are the main etiological agents. The main risk factors are heavy rains, floods, contamination of water sources and lack ofsanitation. Conclusion: In addition to the suffering of patients, cholera outbreaks cause panic, disrupt economic and social structures and hinder the development of affected communities. Mobilization of the water, sanitation and hygiene sectors is essential to ensure the benefits of patient care and cholera vaccination.Introduction : Le choléra demeure un problème majeur de Santé Publique dans de nombreuses parties du monde et en particulier dans les pays d’Afrique subsaharienne. L’objectif de cette étude de faire une revue des donnéessur les épidémies de choléra, les facteurs de risques, microbiologiques et de lutte contre la maladie en Afrique sub-saharienne de 2010 à 2016. Materiels et méthode: Une revue de la littérature sur les épidémies de choléra en Afrique sub-saharienne de 2010 à 2016 a été conduite dans des banques de données ou bases de données et bibiothèques électroniques des pays ayant connu des épidémies. Les données annuelles de choléra dans les pays ayant connu des épidémies de 2010 à 2016 ont été rapportées. Résultats : Entre 2010 et 2016, 35 des 54 pays d'Afrique ont connu des épidémies de choléra. 1268 épisodes épidémiques ont été rapportés dont 13,04% au Nigeria et 4,35% au Burundi. Le nombre de cas notifiés était de 801022 dont 13232 décès (létalité globale =1,65%). Le Vibrio cholerae O1 et O139 sont les principaux agents étiologiques épidémiogènes. Les principaux facteurs de risques sont les pluies abondantes, les inondations, la contamination des sources d’eau et le manque d’assainissement. Conclusion : En dehors des souffrances éprouvées par les malades, les flambées de choléra provoquent la panique, désorganisent les structures économiques et sociales et freinent le développement des communautés touchées. Cependant, la mobilisation des secteurs de l’eau, de l’assainissement et de l’hygiène ainsi que le rensforcement des systemes de surveillance et riposte surtout au niveau transfrontalier sont des etapes essentielles pour la lutte contre les epidemies de cholera en Afrique subsaharienne

Under-exploited wild Vigna species potentials in human and animal nutrition: A review

This research article published by Elsevier, 2018Food insecurity, protein-energy malnutrition, and food-feed competition have motivated the search for alternative food and feed sources for human and animal nutrition. According to the FAO, only four crop species provide half of the plant-based calories in the human diet. This review, with an inquisitive focus on investigating alternative potential food and feed sources, has revealed that the Vigna genus (an important group of legumes) possesses more than a 100 species from which only 10 have been domesticated and are being given better attention. Thus, more than 90 species are still under-exploited despite their probable huge potential to alleviate food insecurity either by adding food varieties (domestication) or by providing information for breeding purposes. The review further demonstrates that the utilization of the wild Vigna species for both human food and animal feed is still very limited because of the unawareness of their potentials over some improved varieties which are facing challenges. An increased scientific effort towards exploring the potentials of wild legumes is recommended in planning the future food strategies

Agro-Morphological Exploration of Some Unexplored Wild Vigna Legumes for Domestication

This research article published by MDPI, 2020The domestication of novel or hitherto wild food crops is quickly becoming one of the most popular approaches in tackling the challenges associated with sustainable food crop production, especially in this era, where producing more food with fewer resources is the need of the hour. The crop breeding community is not yet completely unanimous regarding the importance of crop neo-domestication. However, exploring the unexplored, refining unrefined traits, cultivating the uncultivated, and popularizing the unpopular remain the most adequate steps proposed by most researchers to achieve the domestication of the undomesticated for food and nutrition security. Therefore, in the same line of thought, this paper explores the agro-morphological characteristics of some wild Vigna legumes from an inquisitive perspective to contribute to their domestication. One hundred and sixty accessions of wild Vigna legumes, obtained from gene banks, were planted, following the augmented block design layout of two agro-ecological zones of Tanzania, during the 2018 and 2019 main cropping seasons for agro-morphological investigations. The generalized linear model procedure (GLM PROC), two-way analysis of variance (two-way ANOVA), agglomerative hierarchical clustering (AHC) and principal component analysis (PCA) were used to analyze the accession, block and block vs. accession effects, as well as the accession × site and accession × season interaction grouping variations among accessions. The results showed that the wild species (Vigna racemosa; Vigna ambacensis; Vigna reticulata; and Vigna vexillata) present a considerable variety of qualitative traits that singularly exist in the three studied checks (cowpea, rice bean, and a landrace of Vigna vexillata). Of the 15 examined quantitative traits, only the days to flowering, pods per plant, hundred seed weight and yield were affected by the growing environment (accession × site effect), while only the number of flowers per raceme and the pods per plant were affected by the cropping season (accession × season effect). All the quantitative traits showed significant differences among accessions for each site and each season. The same result was observed among the checks, except for the seed size trait. The study finally revealed three groups, in a cluster analysis and 59.61% of the best variations among the traits and accessions in PCA. Indications as to the candidate accessions favorable for domestication were also revealed. Such key preliminary information could be of the utmost importance for the domestication, breeding, and improvement of these species, since it also determines their future existence—that is, so long as biodiversity conservation continues to be a challenging concern for humanit

Impact de l’usage des gants médicaux sur l’observance de l’hygiène des mains au cours des soins au Centre Hospitalier et Universitaire du Point G de Bamako

Objectif : Évaluer l'impact de l'usage des gants médicaux sur l'observance de l'hygiène des mains et promouvoir leur usage approprié. Matériel et Méthodes: Il s’agissait d’une étude interventionnelle avec une évaluation avant et après intervention. Sa mise en œuvre a été réalisée entre avril 2010 et octobre 2011 au Centre Hospitalier et Universitaire du Point G. Le recueil du consentement éclairé et les observations ont été effectués auprès du personnel soignant ayant un contact direct avec les patients avant et après intervention. Ces observations ont été discrètes mais ouvertes, menées auprès des soignants préalablement informés du but et du programme des activités. Résultats : Au total, 143 fiches de consentement éclairé ont été retournées sur une prévision de 274 fiches, soit 52,19%. Les observations ont donné un taux d’observance globale de 52,05% avant intervention contre 42,97% après intervention (p = 0,0017). Le taux global de port de gants était de 23,30% et 27,20% respectivement avant et après intervention (p = 0,12). Conclusion : Les résultats des deux évaluations avant et après intervention ont montré une amélioration du taux global de port des gants qui n’était pas significative mais sans impact sur l’observance de l’hygiène des mains

Prise En Charge Des Anévrismes Artériels Dans Un Centre Africain Non Spécialisée

Introduction: Arterial aneurysms affect 7 to 8% of people over 65 in the West and are the 2nd leading cause of death in these countries. In Africa this frequency is poorly evaluated. The objective of this work is to report the management of arterial aneurysms at the National Hospital of Niamey (HNN). Patients and methods: This was a retrospective, descriptive study over a period of eight (8) years from January 2009 to December 2016, performed in the surgical departments of the National Hospital of Niamey. Included in the study were patients of both sexes, hospitalized and / or operated for arterial aneurysm. Not included were patients treated for arterial aneurysm with incomplete records or those concerning the neurosurgical sphere. Results: During the study period, 17,748 patients were hospitalized in the general surgery departments, including 16 patients for arterial aneurysm, or 0.09% of surgical pathologies. There were 13 men (81.25%) and 3 women (18.75%), or a sex ratio of 4.33. The average age was 55.75 years with extremes ranging from 25 years old to 90 years old. The circumstances of discovery of the aneurysms were swelling of the antero-internal aspect of the thigh in 7 cases (43.75%), abdominal mass 6 cases (37.50%), then 2 cases (12.50%) of chest pain and incidental discovery in 1cas (6.25%). The most common risk factor was high blood pressure with 43.75% (7 cases). The aneurysm sat on the femoral artery in 43.75% (n = 7), of which 6 on the deep femoral and 1 on the superficial femoral, on the infrarenal aorta in 31.25% (n = 5), on thoracic aorta 12.50% (n = 2), on the iliac artery 12.50% (n = 2). For the diagnosis the angioscanner is realized in all the patients and in addition Doppler ultrasound in 43, 75% of cases. Twelve (12) patients benefited from curative surgical intervention by prosthetic graft by PTFE in 58.33% of cases and by Dacron in 41.66%. The average stay was 29.75 days and the immediate operative followup was complicated by thrombosis in 12.5% and parietal suppurations in 6.25%. We recorded two (2) deaths, ie 12.5% among non-operated patients. Conclusion: Arterial aneurysms are rare diseases at the HNN. Conventional surgery is the treatment performed in our patients. The postoperative course was simple in most cases

The Particle-Vibration Coupling Form Factor

peer reviewe